Vacuum-feed tank for carburetors



June 24 1924.

.D. S. MARIA .VACUUMFEED TANK FOR CARBURETORS Filed March 20.

1923 '2 Sham-Sheet 1 June 24,1924. 1,499,067

' D. s. MARIA VACUUM FEED TANK FOR CARBURETORS Filed March 20. 1923 2Sheets-Sheet 2 @MMMM INVENTOR.

MAM

ATTORNEY Patented June 24, 1924.

' rare? DANIEL SANTA IVIARIA, OF TOPANGA, CALIFORNIA, ASSIG-NOR OFONE-HALF TO E. I; 5 GROOK, OF LOS ANGELES, CALIFORNIA.

VACUUM-FEED TANK FOR CARBURETORS.

I Application filed March 20, 1923. Serial No. 626,817.

To aZZ whom it may 00mm:

Be it known that I, DANIEL SANTA MARIA, a citizen of the United Statesof America, a resident of Topanga, in the county of Los Angeles, Stateof California, have invented a new and useful Improvement in. Vacuum-Feed Tanks for Carburetors, of which the following, when read withreference to the accompanying drawings, is such a full, clear, and exactspecification embodying the invention in its preferred form as willenable others skilled in the art to which it appertains tomake and usethe same.

My invention relates to an improvement in vacuum feed tanks forcarburetors of an internal combustion engine, and hasfor one of itsobjectsto reduce the number of moving parts to the minimum and therebyincrease its simplicity, durability and certainty of operation.

Another object is to provide a vacuum tankfeed control system such aswill bepositive in its actuations, thus rendering certain the resultsattained thereby Without theuse of levers or pivotating points orconnections likely to get out of order by breakage due to sudden jars orvibrations incident to road shocks and the like, when used on anautomobile. Another object is to provide a means whereby the flow of gasto the carburetor will be continuous when'used in conjunction with theother mechanism of my vacuum tank feed. v a V w Another object is toprovide a typeof control for the vacuum valve whereby the level of theliquid fuel within the tank will at all .times be maintained withincertain maXimum and minimum levels.

Another object is to provide a controlling means or system whereby theliquid fuel will become a weight atthe low level within the supply tankto actuate a valve action so as to cut off the'air supply to the saidtank and open a valve to create a vacuum therein so asto suck fuel intothe tank from a general reservoir, and when the said; fuel rises to acertain level, ameans will be formed by a float or invertedcup, as thecase may be, of actuating a, reverse valve action on the which. it maybe continuously supplied to I the carburetor.

Other objects and advantages will be manifest in the followingspecification of the embodiment of the invention illustrated in theaccompanying drawings which form an essential part of this specificationshow ing the adaptations in its preferred form.

' Figure 1 is a diagrammatical view of the arrangements and connectionsand a crosssectional view of the vacuum feed tank.

Figure 2 is an enlarged detailed view of the valve.

Figure 3 is an enlarged perspective view of the float or inverted cup.

Figure 4 is a diagrammatical view showing the adaptation of theinvention to an internal combustion engine of an automobile. Of courseit will be understood thatno particular type of internal combustionengine is contemplated, since it is equally adaptable to all types ofinternal combustion engines and the accompanying drawings show theadaptation of the same, for thepurpose of illustration. It is not mydesire to be confined to the particular form of adaptation, since thisadaptation is used for the purpose of illustrating the invention in itspreferred form.

i Incarrying out. my invention, cylindrical tank 1, shown in Figures 1and 4 is provided. This tankprimarily consists of two compartments A andB. The A compartment is subject to suction produced from manifold 2,such suction being communicated through pipe-connection 3 to valveopening 4-, as shown in Figure 1.. ,Needle valve 5 is connected withplate 6, as showni-n Figure 1. Also connected to plate 6 is poppet valve7, the said needle valve being so arranged with respect to plate 6 andpoppet valve that said needle valve is opened as poppet valve 7. isclosed and, reversely, as poppet valve 7 is opened, needle valve isclosed. Plate6 is rigidly held to rod 8 androd 8 is rigidly attached toribbon spring 9 which is held to the frame work of vacuum tank 1 bymeans of rivets 10, as shown in Figure 1. On the lower end of rod 8,washer 11 is rigidly at tached. Cup 12 and inverted cup 13 are rigidlyheld upon rod 14 and are arranged to reciprocate within the vacuum tankcompartment A upon ribbon springs 15 and 16 as shown in Figure 1. Theseribbon springs are rigidly held to frames 17 and 18 by means of suitablescrews or bolts 19 and 20.

Compartments A and B of the vacuum tank are separated by means ofpartition 21. Located within this partition is suitable openings withinwhich tube 22 is arranged, shown in Figure 1, and in enlarged detailedview in Figure 2, the said tube depending from such partition 21, asshown. Within this tube 22, as shown, check valves 23 are arranged so asto freely permit the downward flow of gasoline G from compartment A tocompartment B, as can be readily understood, but will not, by reason ofsaid check valves 23, permit the gasoline G to be sucked upintocompartment A by any vacuum which may be created therein, as can bereadily understood. From compartment B gasoline may be permitted to flowthrough tube 24 to carburetor 25 attached to intake manifold by means ofsuitable screws or bolts 26.

Tube 27, attached to main tank 28, is

connected with the vacuum tank, as shown in Figure 1.

2 Now in operation it will be understood that when the engine isstarted, a certain amount of vacuity is created in intake manifold 2,the suction produced within the said manifold being communicated,through tube 3, to compartment A when the air valve 9, as shown inFigure 1, is closed. This vacuity is, in turn, through compartment A,transmitted through tube 27 to tank 28 thus inducing gasoline G to flowupwardly through said tube and into compartment A, thus continuing tofill said compartment A as well as cup 12 and continuing to fill sameuntil the buoyancy created by inverted cup or float 13, when thegasoline line gets to dotted line 29, at which time, this buoyancy willcause suf ficient upward pressure to be exerted on rod 14 and on ribbonsprings 15 and 16 that the same will quickly flop upward to the positionshown by dotted lines bearing the same numbers, The upper end of rod 14is yokeshaped, as shown in detail in Figure 3, so as to engage and exerta pressure on ribbon spring 9, attached to rod 8 carrying plate 6 andneedle valve 5 and poppet valve 7, as shown, thus causing the said plate6. to be elevated, and thus closing needle valve and opening the airpoppet valve so as to to carburetor 25, as can be readily understood byreference to Figure 1. It will also be understood that when a suflicientvacuity is created in compartment A, the said valves 23 will beautomatically closed by the suction induced from compartment A, throughtube 22, but nevertheless, air through tube 29, as shown in Figure 1, ispermitted to flow freely therethrough, and thus this air'has ingress andegress to and from the said compartment B so as to permit a continuousflow of gasoline down through pipe 24 to carburetor 25, as can bereadily understood by reference to Figure 1.

Of course, it will be understood, that various changes may be made inthe arrangement, association and collocation of parts without departingfrom the spirit of this in vention.

Having thus described my invention in its preferred form, what I claimand for which I desire to secure Letters Patent are as follows In asystem of vacuum tank feed for carburetors, the combination of; a tank;a tube leading from the said tank to the manifold; a needle valvearranged within the said tank in operative relation to the open ing ofthe said tube, the said needle valve being connected to a plate; apoppet valve connected to the said plate, the said poppet valve beingoperatively arranged to open and close an air vent leading to the saidtank, the said poppet valve and the said needle valve being so arrangedon the said plate and with respect to the said openings that when theneedle valve is closed the poppet valve is open and, conversely, whenthe poppet valve is closed the needle valve is open; a rod supportingthe said plate; ribbon springs attached to the inner walls of the saidtank supporting the said rod; a cup and an inverted cup attached to thesaid rod, the said cup forming means, when filled with liquid, ofinducing a downward movement of the said springs, and the inverted cupforming means of inducing the upward movement of the said springs; apartition in the said tank a tube arranged in an opening in the saidpartition; check of the aforesaid tank; and a supply tube leading fromthe said compartment to a carburetor, substantially as described. 1

In testimony whereof I have signed my name to this specification.

DANIEL SANTA MARIA.

